Add rtlm
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074ea78749
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@ -42,6 +42,12 @@ hb_tag_t default_features[] = {
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HB_TAG('m','k','m','k'),
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};
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enum {
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MASK_ALWAYS_ON = 1 << 0,
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MASK_RTLM = 1 << 1
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};
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#define MASK_BITS_USED 2
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struct lookup_map {
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unsigned int index;
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hb_mask_t mask;
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@ -148,10 +154,7 @@ setup_lookups (hb_face_t *face,
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break;
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}
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/* Clear buffer masks. */
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buffer->clear_masks ();
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unsigned int next_bit = 1;
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unsigned int next_bit = MASK_BITS_USED;
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hb_mask_t global_mask = 0;
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for (i = 0; i < num_features; i++)
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{
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@ -310,7 +313,11 @@ hb_mirror_chars (hb_buffer_t *buffer)
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unsigned int count = buffer->len;
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for (unsigned int i = 0; i < count; i++) {
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buffer->info[i].codepoint = get_mirroring (buffer->info[i].codepoint);
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hb_codepoint_t codepoint = get_mirroring (buffer->info[i].codepoint);
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if (likely (codepoint == buffer->info[i].codepoint))
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buffer->info[i].mask |= MASK_RTLM;
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else
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buffer->info[i].codepoint = codepoint;
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}
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}
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@ -431,6 +438,10 @@ hb_ot_shape (hb_font_t *font,
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hb_form_clusters (buffer);
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/* SUBSTITUTE */
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buffer->clear_masks ();
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hb_substitute_default (font, face, buffer, features, num_features);
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/* We do this after substitute_default because mirroring needs to
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@ -442,6 +453,11 @@ hb_ot_shape (hb_font_t *font,
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if (substitute_fallback)
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hb_substitute_complex_fallback (font, face, buffer, features, num_features);
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/* POSITION */
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buffer->clear_masks ();
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hb_position_default (font, face, buffer, features, num_features);
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position_fallback = !hb_ot_position_complex (font, face, buffer, features, num_features, original_direction);
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